Miri: Tickboxen

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<html>
 <head>
  <title>Meine Hobbys (Part II)</title>
 </head>
 <body>
                 <h1>Meine Hobbies sind...</h1>
                 <form name="frm">
                         <input type="checkbox" name="hobby1" value="Musik"> Musik <br>
                         <input type="checkbox" name="hobby2" value="Computer"> Computer <br>
   <input type="checkbox" name="hobby3" value="Mathe"> Mathematik <br>
                         <input type="checkbox" name="hobby4" value="Lesen"> Lesen <br>
   <input id="sport" type="checkbox" name="hobby5" value="Sport"> Sport <br>
   <input type="checkbox" name="hobby6" value="Handball" onklick="check(this,'sport')"> Handball <br>
                         <br>
     <input type="button" value="Zeige Hobbys..." onClick="auswertung()">
  </form>
                 <script language="JavaScript">
                 <!--
                         function auswertung()
                         {
                          eingabe=""
                          if (document.frm.hobby1.checked)
                          {
                                  eingabe += "Musik \n";
                          }
                          if (document.frm.hobby2.checked)
                          {
                                  eingabe += "Computer \n";
                          }
                          if (document.frm.hobby3.checked)
                          {
                                  eingabe += "Mathematik \n";
                          }
                          if (document.frm.hobby4.checked)
                          {
                                  eingabe += "Lesen \n";
                          }
                          if (document.frm.hobby5.checked)
                          {
                                  eingabe += "Sport \n";
                          }
                          if (document.frm.hobby6.checked)
                          {
                                  eingabe += "Handball \nSport ";
                                          dannAuchSport();
                          }
                          alert(eingabe);
                         }
                         function dannAuchSport()
                         {
        alert("Wenn Ihr Hobby Handball ist, dann auch Sport!");
   }
                         function check(element, id)
                         {
      var other = document.getElementById(id);
    if (typeof(other) == 'object')
                                 {
         other.checked = element.checked;
      }
   }
                 //-->
                 </script>
 </body>
</html>